Hummer H3. Manual — part 780

29. Using the transmission jack, carefully lower the transmission from the vehicle.

The fuel hose/pipe brackets

The heater pipe

The transmission oil cooler pipes

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3

Fig. 179: View Of J 21366 Installed On Torque Converter
Courtesy of GENERAL MOTORS CORP.

30. Install the J 21366 onto the transmission bell housing to retain the torque converter. See

Special Tools.

31. Perform the flush and flow test on the automatic transmission oil cooler. Refer to

Transmission Fluid Cooler Flushing and Flow Test (J 45096) or Transmission Fluid
Cooler Flushing and Flow Test (J 35944-A).

Installation Procedure

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3

Fig. 180: View Of J 21366 Installed On Torque Converter
Courtesy of GENERAL MOTORS CORP.

1. Remove the J 21366 from the transmission. See Special Tools.

2. Ensure the torque converter is fully engaged with the transmission oil pump.

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3

3. Using the transmission jack, carefully raise the transmission to the engine.

IMPORTANT: Ensure clearance is maintained between the transmission

and the following:

The catalytic converter

The engine wiring harness

The fuel hose/pipe brackets

The heater pipe

The transmission oil cooler pipes

2007 Hummer H3

2007 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E/4L70-E - H3